1. At moderate pressure the compressibility factor for a particular gas is given by   z = 1 + 0 . 34 p - 170 P T ( P   i n   b a r   a n d   T   i n   K e l v i n   )
The Boyle's temperature of the gas is 
(A) 298 K 
(B) 170 K

Dear student,
At boyle's temperature, the gas behaves as an ideal gas hence its Z should be 1.
which means,

0.34P = 170(P/T)

T = 500K.

Hope it helps
Regards

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